Agent Skills: manage-skills

Manage and maintain VRP Toolkit skills through compliance checking, audit tracking, and documentation synchronization. Use when (1) adding or modifying skills, (2) checking skill compliance with project standards, (3) auditing SKILLS.md vs skills directory consistency, (4) recording skill changes to SKILLS_LOG.md, or (5) performing periodic skill health checks. Ensures skills stay independent, under 500 lines, properly structured, and well-documented.